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f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005, Devicescape Software, Inc. | |
4 | * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #ifndef IEEE80211_RATE_H | |
12 | #define IEEE80211_RATE_H | |
13 | ||
14 | #include <linux/netdevice.h> | |
15 | #include <linux/skbuff.h> | |
16 | #include <linux/types.h> | |
d0709a65 | 17 | #include <linux/kref.h> |
f0706e82 JB |
18 | #include <net/mac80211.h> |
19 | #include "ieee80211_i.h" | |
20 | #include "sta_info.h" | |
21 | ||
f0706e82 | 22 | struct rate_control_ref { |
4b7679a5 | 23 | struct ieee80211_local *local; |
f0706e82 JB |
24 | struct rate_control_ops *ops; |
25 | void *priv; | |
26 | struct kref kref; | |
27 | }; | |
28 | ||
f0706e82 JB |
29 | /* Get a reference to the rate control algorithm. If `name' is NULL, get the |
30 | * first available algorithm. */ | |
31 | struct rate_control_ref *rate_control_alloc(const char *name, | |
32 | struct ieee80211_local *local); | |
4b7679a5 | 33 | void rate_control_get_rate(struct ieee80211_sub_if_data *sdata, |
e6a9854b JB |
34 | struct sta_info *sta, |
35 | struct ieee80211_tx_rate_control *txrc); | |
f0706e82 JB |
36 | struct rate_control_ref *rate_control_get(struct rate_control_ref *ref); |
37 | void rate_control_put(struct rate_control_ref *ref); | |
38 | ||
4b7679a5 JB |
39 | static inline void rate_control_tx_status(struct ieee80211_local *local, |
40 | struct ieee80211_supported_band *sband, | |
41 | struct sta_info *sta, | |
e039fa4a | 42 | struct sk_buff *skb) |
f0706e82 JB |
43 | { |
44 | struct rate_control_ref *ref = local->rate_ctrl; | |
4b7679a5 JB |
45 | struct ieee80211_sta *ista = &sta->sta; |
46 | void *priv_sta = sta->rate_ctrl_priv; | |
2b874e83 | 47 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
f0706e82 | 48 | |
2b874e83 JB |
49 | if (likely(info->flags & IEEE80211_TX_INTFL_RCALGO)) |
50 | ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb); | |
f0706e82 JB |
51 | } |
52 | ||
53 | ||
4b7679a5 | 54 | static inline void rate_control_rate_init(struct sta_info *sta) |
f0706e82 | 55 | { |
4b7679a5 | 56 | struct ieee80211_local *local = sta->sdata->local; |
f0706e82 | 57 | struct rate_control_ref *ref = sta->rate_ctrl; |
4b7679a5 JB |
58 | struct ieee80211_sta *ista = &sta->sta; |
59 | void *priv_sta = sta->rate_ctrl_priv; | |
60 | struct ieee80211_supported_band *sband; | |
61 | ||
62 | sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; | |
63 | ||
64 | ref->ops->rate_init(ref->priv, sband, ista, priv_sta); | |
f0706e82 JB |
65 | } |
66 | ||
81cb7623 S |
67 | static inline void rate_control_rate_update(struct ieee80211_local *local, |
68 | struct ieee80211_supported_band *sband, | |
69 | struct sta_info *sta, u32 changed) | |
70 | { | |
71 | struct rate_control_ref *ref = local->rate_ctrl; | |
72 | struct ieee80211_sta *ista = &sta->sta; | |
73 | void *priv_sta = sta->rate_ctrl_priv; | |
74 | ||
75 | if (ref->ops->rate_update) | |
76 | ref->ops->rate_update(ref->priv, sband, ista, | |
77 | priv_sta, changed); | |
78 | } | |
f0706e82 | 79 | |
f0706e82 | 80 | static inline void *rate_control_alloc_sta(struct rate_control_ref *ref, |
4b7679a5 | 81 | struct ieee80211_sta *sta, |
f0706e82 JB |
82 | gfp_t gfp) |
83 | { | |
4b7679a5 | 84 | return ref->ops->alloc_sta(ref->priv, sta, gfp); |
f0706e82 JB |
85 | } |
86 | ||
4b7679a5 | 87 | static inline void rate_control_free_sta(struct sta_info *sta) |
f0706e82 | 88 | { |
4b7679a5 JB |
89 | struct rate_control_ref *ref = sta->rate_ctrl; |
90 | struct ieee80211_sta *ista = &sta->sta; | |
91 | void *priv_sta = sta->rate_ctrl_priv; | |
92 | ||
93 | ref->ops->free_sta(ref->priv, ista, priv_sta); | |
f0706e82 JB |
94 | } |
95 | ||
e9f207f0 JB |
96 | static inline void rate_control_add_sta_debugfs(struct sta_info *sta) |
97 | { | |
98 | #ifdef CONFIG_MAC80211_DEBUGFS | |
99 | struct rate_control_ref *ref = sta->rate_ctrl; | |
100 | if (sta->debugfs.dir && ref->ops->add_sta_debugfs) | |
101 | ref->ops->add_sta_debugfs(ref->priv, sta->rate_ctrl_priv, | |
102 | sta->debugfs.dir); | |
103 | #endif | |
104 | } | |
105 | ||
106 | static inline void rate_control_remove_sta_debugfs(struct sta_info *sta) | |
107 | { | |
108 | #ifdef CONFIG_MAC80211_DEBUGFS | |
109 | struct rate_control_ref *ref = sta->rate_ctrl; | |
110 | if (ref->ops->remove_sta_debugfs) | |
111 | ref->ops->remove_sta_debugfs(ref->priv, sta->rate_ctrl_priv); | |
112 | #endif | |
113 | } | |
114 | ||
ff688089 JB |
115 | /* functions for rate control related to a device */ |
116 | int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local, | |
117 | const char *name); | |
118 | void rate_control_deinitialize(struct ieee80211_local *local); | |
119 | ||
4b475898 JB |
120 | |
121 | /* Rate control algorithms */ | |
e5f5e733 | 122 | #ifdef CONFIG_MAC80211_RC_PID |
4b475898 JB |
123 | extern int rc80211_pid_init(void); |
124 | extern void rc80211_pid_exit(void); | |
125 | #else | |
126 | static inline int rc80211_pid_init(void) | |
127 | { | |
128 | return 0; | |
129 | } | |
130 | static inline void rc80211_pid_exit(void) | |
131 | { | |
132 | } | |
133 | #endif | |
134 | ||
cccf129f FF |
135 | #ifdef CONFIG_MAC80211_RC_MINSTREL |
136 | extern int rc80211_minstrel_init(void); | |
137 | extern void rc80211_minstrel_exit(void); | |
138 | #else | |
139 | static inline int rc80211_minstrel_init(void) | |
140 | { | |
141 | return 0; | |
142 | } | |
143 | static inline void rc80211_minstrel_exit(void) | |
144 | { | |
145 | } | |
146 | #endif | |
147 | ||
148 | ||
f0706e82 | 149 | #endif /* IEEE80211_RATE_H */ |